Paperless recording instrument is a new type of intelligent paperless recording instrument based on advanced CPU, supplemented by large-scale integrated circuits, large-capacity FLASH storage, intelligent signal conditioning, SmartBus bus and high-resolution graphic LCD display. Long-life LED backlit 160 × 128 monochrome LCD display, support 4/8 / 16-channel analog universal input or 2/4 / 8-channel analog output and 12-channel alarm output, setting data and recording data with power failure protection function , Has the characteristics of small size, many channels, low power consumption, high accuracy, strong versatility, stable operation, high reliability and so on.
Color paperless recording instrument is a new intelligent paperless recording instrument based on a 32-bit embedded CPU, supplemented by large-scale integrated circuits, large-capacity FLASH storage, intelligent signal conditioning, SmartBus bus, and high-resolution graphic LCD display . The instrument adopts 320 × 240 color LCD display; supports 16-channel analog universal input or 8-channel analog output and 12-channel alarm output; setting data and recording data have power failure protection function; adopts USB Host technology and provides USB bus interface, Realize FAT16 file system, support USB mobile storage data read and write; It has the characteristics of small size, many channels, low power consumption, high accuracy, strong versatility, stable operation, high reliability and so on.
Evolution of the small long chart paperless recorder
The development of recorders has a history of several decades. As an important data recording instrument, it has been widely used in various industrial sites, especially in the field of process control. It is a very commonly used secondary instrument in automation instruments, and it is an extremely effective tool for recording and saving data.
Throughout the development process of the recorder, it has roughly gone through three stages: traditional mechanical analog meters, the first generation of paperless recorders, and network-based multifunctional paperless recorders based on virtual technology.
Prior to 1995, basically a mechanical pen- and-paper recorder was used , which used a pen to draw curves on the recording paper to achieve the purpose of recording and saving data. Due to its complex pen-head servo system and many mechanical moving parts, its reliability is poor. At the same time, the mechanical recorder has inherent defects such as a single display mode (curve recording), subsequent data processing difficulties, and high long-term operating costs (requires regular replacement of recording paper and ink).
In 1992, the International Instrumentation Exhibition was held in Beijing, and British P & G and German B & H companies demonstrated paperless recorders with completely new concepts. Domestic disciplinary companies were keenly aware of this major market opportunity, so they carried out imitation development. In 1996, Zhejiang University Central Control first introduced the JL20 series of paperless recorders to the market. The paperless recorder uses a microprocessor, liquid crystal display and semiconductor memory to completely overcome the shortcomings of mechanical recorders. It has become an indisputable fact that recorders have replaced mechanical recorders.
During the following ten years of development, domestic products in the paperless recorder market occupied an overwhelming advantage, and domestic and foreign products were roughly at the same technical level. Although Honeywell, YOKOGAWA and other foreign companies' products are more refined than domestic products, the accuracy of ± 1.5 ‰ is better than the domestic product of ± 2.0 ‰, but the price of more than 4 times is prohibitive for users.
After nearly ten years of development, the current recorder technology level has been qualitatively improved. The result of the improvement is the third stage mentioned above-a networked multifunctional paperless recorder based on virtual technology, which presents the following technical characteristics :
l Display device: Large color LCD screen replaces small monochrome LCD screen;
l Display technology: multiple measurement display modes-curve, bar graph, number, flow chart;
l I / O channel: universal input module replaces custom input module, and widely used point isolation technology;
l Measurement technology: VF measurement replaces AD measurement (based on low cost);
l Network technology: Networked operation mode replaces single-machine operation mode;
l Storage media: large-capacity FLASH electronic disks instead of magnetic disks;
l Virtual technology: the extensive application of virtual instrument technology on paperless recorders-virtual channels;
l Multi-function: reasonable integration of data measurement, flow accumulation, and control functions;
Jiangsu Dongxiang Instrument Recorder Related Products: Zirconia Oxygen Analyzer , Large Screen Display , True Color Paperless Recorder , Medium-Length True Color Paperless Recorder , Mini Paperless Recorder